About 20456 - Washington, District of Columbia
Located in District of Columbia, the United States is home to the mid-sized community of Washington, served by ZIP code 20456. It sits within Washington County County.
Census data puts the population of this ZIP code at 13,202 residents. That's below the District of Columbia average of about 22,323 people per ZIP code.
Median household income is about $112,100 (near the District of Columbia average).
This ZIP code sits alongside neighboring areas like Washington within District of Columbia.